Railway truck structure



Feb. 7,195 J. c. TRAVlLLA, JR

RAILWAY TRUCK STRUCTURE Filed April FIG. 2

INVENTOR JAMES C. TRAVILLA JR.

ATTORNEY when cars having nomical construction.

ration of the truck between the underside of the car Patented Feb. 7,:1950

1 UNITED PATENT oFFi-c James .C. Travilla Jri, Swarthmora Ba to GeneralSteel Castings Corporation,

City, Inna corporation of Delaware assignor G e Application Apr-224, isacs riarno.1143,511 1.0mm; (or g ns-199) The invention relates torailway trucks ,and

more particularly to bolster locking. devices .for

preventing vertical'separationofthetruckzbolster and the truck frame.

Truck bolster locking constructed that when the structure, either thelocking device must firstqbe removed from beneath the truck or thebolster .must be removeddownwardly from the-truck. in some railway carsthe centerplate height. is relatively low and-the clearances below thebolster .are restricted so that unless the truck .is placed over a-pitit is practically impossible to remove the locking device, or ingdevice, from below the truck. Therefore trucks with low :centerplatesare placed .on .a rip track where the truck .to be repaired can be runfrom under the car body, the most suitable bolster locking arrangementis one in which the locking device and truck bolster-can be removed fromthe top .of the truck} Furthermore it is desirable that the bolsterlocking device he of minimum weight and of eco;

also'meet clearance conditions between the derside of the car'body andthe truck. Theda} vice should also meet A. A..R. recommendations whichrequire that the locking device develop the full tensile strength of thebodyian'djtruok center'- plate connection so as to prevent verticalsepabolster and "the truck frame in the event-of derailment.

One object of the invention is to provide-a truck bolster locking devicewhich is especially adapted for use on cars where the clearances "bodyand'the top of thetruck are restricted and whichincludes locking membersremovable'from the top ofthe truck to effectseparation'oithe bolsterandtruck 1 frame, and which provides a locking device of minimum weightand of economical construction.

Another object-is to provide forremoving the bolster from the top of.the truck after removal 1 of the locking members.

Another object is to remove the locking members without removing thebrakebalance hanger support plates.

Another .objectis to provide arbolster locking :device which has .ashearvalue at least as great .as the 1 tensile strength of the vlockingcenter "pin which connects the truck center plate to "the body center.plate. Anotherzobject-is to provide devices 'as used heretothe Ibolsterwith the lock- The1ocking device should a compact bolster e55proximately on the .line

locking device having.-.sumcient;strength tomeet 1A. .A. R,especifications.

Another object is to adapt the locking device to a channel shapedbolster.

Other objects will be apparentto those skilled in the art .from thefollowing description (and accompanying drawings .in which:

Figure .1 .is .a .central longitudinal vertical section of a railwaytruck including .alocking device constructed according to the invention.

Figure 2 is .a detail topview o't-thescentral part of the .truck drawnto: enlargedscaleand showing the locking .device which.consists..ofelements on the truck bolster and on the truck frame ,transoms. Aportion of one of theremovable locking elementson the transom.islbrokenzaway to,better illustrate an associatedfelementlntegral withthe transom.

v Figure .3 .is .a detail longitudinal vertical .sec- ;tiontakenapproximately on thel'line 3 -3 of .Figure. 2 and showstheloc'kingdevice .ahdassociated brake balance hanger support plate ,andlhanger. Figure, A is a {detail 'vertical .section taken lap- 4-''4 ofFigure 2.

"Thetruck includes wheel andaxle assemblies LI and journal lboxes Q2which support equalizers "3 mountingtruck springs f4 which carry a truckirame'iihaving spaceditransoms 5a. 'The truck "is of the ,lateral motionbolster type and has pairs of swing hangers 6 at opposite sides ofthe.ttruck 'pivotally suspendedjirom "frame '5'by pins 1. Each pair ofhangers J6 has a crossbar 8 which "supports the adjacent endof a] springplank .9. Near the ends of ,springplankTSi are mounted "leaf springs inwhich support'between the tranfsoms a bolster Hof 'channelshapedconstruction mounted "the body center plate It by a vertical lockingcenter pin. 'The car'bo'dyimot shown) is mounted onthe body center platel3.

u .A brake 'balarice "hanger support plate I5 is attached "by'bolts "l6to'the center of each transom and extends longitudinally of theitruck.

The bolster "locking device includes alug tl formed inte'grally with thebolster'at the center "of each of its sides and extendingtoward the"ad'jacent'transom 5a. Eachtransom'rhas apafir of lugs 18 at its'inne'rtop cornerextending toward'the bolster. 'Lugs it are spaced laterallyof'the'truck from one another to permit bolster lug "IT 'to movevertically between-them without interference when the bolsteris removedfrom the truck'frame. Each transom 5a, has an exten'sion 5b-at its'sideopposite lugs 18.

-' separate locking member 19 is attached "to having :a center plate l2onwhich is .rotatably r r r and bolster is prevented when the lockingmembers I9 are assembled to the transoms and such separation may occuronly when the locking members are removed therefrom.

Locking members l9 are readily removable from the top of the truck andwithout detaching the brake balance hanger supports. The bolster thenmay be removed from the top of the truck also. By providing transom lugsl8 and a hook- *like part 21 on looking member IS in engagementtherewith, locking member is and bolts 20 may he of relativelylight-weight material and be of sulficient strength to meet A. A. R.specifications. The locking device is adapted for use with achannel-shaped bolster and has a shear value at least as great as thetensile strength of the pin which connects the truck center plate withthe body center plate.

The device may be varied substantially accord- "ing to the details ofconstruction without departing from the spirit of the invention, and theexelusive use of those modifications coming within the scope of theclaims is contemplated.

What is claimed is:

1. In a railway truck, a truck frame having spaced transoms, a bolstertherebetween, a lug at the side of said bolster extending toward theadjacent transom, and a locking member re- ;movably attached to saidadjacent transom and extending beneath an integral part of said tran--som and toward said bolster with a portion extending over the bolstering to limit upward ,movement of said bolster relativeto the frame "bythe resistance of the lugs to shear. 2. In a railway truck, a truckframe having a transom member, a bolster member extending jalongsidethereof, lug-like structure rigid with "the side of each of said membersand extending -toward the other of said members, at least one r of saidstructures comprising elements spaced apart laterally of the truck topass between them the other structure when said bolster member is liftedfrom said frame, and a locking element fietachably secured to one ofsaid members exftending laterally'of the truck and overlying the .lugstructure on said bolster member and underlying the lug structure onsaid transom member "to limit upward movement of said bolster memberrelative to said transom member.

' j 3. In a railway truck, a truck frame having spaced transoms, a brokebalance hanger support .attached to each of said transoms at thelongitu- ,dinal center line of the truck, a bolster mounted ,betweensaid transoms and arranged for move- ..ment vertically relative to saidframe, a rigid lug at each side of said bolster at the longitudinalcenter line of the truck and extending toward the adjacent transom, adetachable locking member on each transom overlying the brake balancehanger support and extending toward the bolster and having a portionoverlying the adjacent bolster lug to limit vertical movement of saidbolster and transom, andremovable elements deanother y "when saidbolster is removed from said frame,

laterally of the truck file of this patent:

Number taohably securing said locking members to said transoms andproviding for removal of said looking members without removing saidsupports.

4. In a railway truck, a truck frame including a transom, a bolster, alug projecting from a side the bolster toward the transom, lugs on thetransom spaced laterally of the truck from one to pass between them thebolster lug and a separate locking member attached to said transom andhaving a part engaging the underside of the transom lugs and extendinglaterally of the truck from one lug to the other and having a portionoverlying the bolster lug to prevent vertical separation of the frameand bolster.

5. In a railway truck, a truck frame including spaced transoms, abolster having a lug at each transom spaced laterally of the truck fromone another to pass between them the associated bolster lug when saidbolster is removed from said frame, and a separate looking memberattached to each of said transoms and having a hook-like part fittingover and un- "der the transom, lugs and having a portion extendinglaterally of the truck from one lug to the other so as to overlie theassociated bolster lug to prevent vertical separation of the frame andbolster.

6. In a railway truck, a truck frame including spaced transoms, abolster suspended between said transoms and arranged for verticalmovement rela frame, a lug at the center of each side of said bolsterextending toward the adjacent transom, a pair of lugs on each transomextending towards said bolster and spaced transom opposite said transomlugs, a detachable locking member on each transom attached to saidextension and extending over the top of the transom and having ahook-like part fitting over at the side of said bolster extending towardthe adjacent transom, a locking member, and means said locking member tosaid transom, said transom having an element thereon for engagement withsaid locking member, said locking member extending over said bolster lugand having engagement with said .transom element whereby upward movementof saidbolster relative to said truck frame is resisted by said elementand independently of said attaching means.

JAMES C. TRAVILLA, JR.

REFERENCES CITED The following references are of record in the I UNITEDSTATES PATENTS Name Date 975,475 Stevens Nov. 15, 1910 1,029,582 BeasleyJune 18, 1912 1,831,722 Shannon Nov. 10, 1931 2,044,576 Kjolseth .1 June16, 1936 2,127,935 Pflager et al Aug. 23, 1938 2,238,593 Kjolseth Apr.15, 1941

